Home / 3,878.47-5,352.06-2,176.81

Finding the Fourth Proportional to 3,878.47, 5,352.06 and 2,176.81

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Solution

The fourth proportional to 3,878.47, 5,352.06 and 2,176.81 is: 3,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.47 : 5,352.06 = 2,176.81 : x
  2. Step 2: Convert to fraction form
    3,878.47/5,352.06 = 2,176.81/x
  3. Step 3: Cross multiply
    3,878.47x = 5,352.06 × 2,176.81
  4. Step 4: Simplify right side
    3,878.47x = 11,650,442.08
  5. Step 5: Solve for x
    x = 11,650,442.08/3,878.47
  6. Step 6: Final answer
    x = 3,003.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.